<template>
  <div class="box">
    <el-row >
        <el-col :offset="2" :span="8">
            <el-input :id="suggestId" v-model="address_detail" :clearable='clearable' placeholder="请输入店铺地址,获取店铺坐标" >
            </el-input>
        </el-col>
        <el-col :span="2">
            <el-button id="position" @click="search" type="primary">定位</el-button>
            </el-col>
        <el-col :span="12" >
        <el-tag type="success" v-clipboard:copy="userlocation.lng" v-clipboard:success="onCopy" v-clipboard:error="onError" >经度 {{userlocation.lng}}</el-tag>
            <el-tag type="success" v-clipboard:copy="userlocation.lat" v-clipboard:success="onCopy" v-clipboard:error="onError">纬度 {{userlocation.lat}}</el-tag>
            <el-tag type="success" ><<<<点击按钮复制经纬度信息</el-tag>
        </el-col> 
    </el-row>
    <el-row>
        <el-col :offset="2" :span="18">
            <div id="map_canvas" class="allmap"></div>
        </el-col>
    </el-row>
  </div>
</template>
<script>
export default {
    name : "Bmap",
        data() {
            return {
            address_detail: "", //详细地址
            userlocation: { lng: "", lat: "" },
            clearable: true,
            suggestId: "suggestId",
            map : {},
            mk: {}
        };
    },
    created () {
        
    },
    methods: {
        drawMap() {
            this.map = new BMap.Map("map_canvas");        // 创建地图实例
            this.map.addControl(new BMap.NavigationControl());      // 启用放大缩小 尺
            this.map.enableScrollWheelZoom();
            this.getlocation();//获取当前坐标, 测试时获取定位不准。
        
            var point = new BMap.Point(this.userlocation.lng, this.userlocation.lat); // 创建点坐标 
            this.map.centerAndZoom(point, 13);         // 初始化地图，设置中心点坐标和地图级别 
            var marker = new BMap.Marker(point);    // 创建标注  
            this.map.addOverlay(marker);           // 将标注添加到地图中
            
            var ac = new BMap.Autocomplete({
            //建立一个自动完成的对象
            input: "suggestId",
            location: this.map
            });
            var myValue;
            ac.addEventListener("onconfirm", (e)=> {
                //鼠标点击下拉列表后的事件
                var _value = e.item.value;
                myValue =_value.province +_value.city +_value.district +_value.street +_value.business;
                this.address_detail = myValue;
                this.setPlace();
            });
        },
        getMarker (point) {
                this.mk = new BMap.Marker(point); 
                this.mk.addEventListener("dragend", this.showInfo);
                this.mk.enableDragging();  //可拖拽
                this.getAddress(point);
                this.map.addOverlay(this.mk);//把点添加到地图上 
                this.map.panTo(point);
        },
        getlocation () {
            //获取当前位置
            var geolocation = new BMap.Geolocation(); 
            geolocation.getCurrentPosition((r) =>{ 
            if(geolocation.getStatus() == BMAP_STATUS_SUCCESS){ 
                this.getMarker(r.point);
                this.userlocation = r.point;
            }else { 
                alert('failed'+this.getStatus()); 
            } 
            });
        },
        //绑定Marker的拖拽事件
        showInfo(e){
            var gc = new BMap.Geocoder();
            gc.getLocation(e.point, (rs)=>{
                var addComp = rs.addressComponents;
                var address = addComp.province + addComp.city + addComp.district + addComp.street + addComp.streetNumber;//获取地址
                
                //画图 ---》显示地址信息
                var label = new BMap.Label(address,{offset:new BMap.Size(20,-10)});
                this.map.removeOverlay(this.mk.getLabel());//删除之前的label
        
                this.mk.setLabel(label);
                this.address_detail = address;
                this.userlocation = e.point;
                
            });
        },
        //获取地址信息，设置地址label
        getAddress(point){
            var gc = new BMap.Geocoder();
                
            gc.getLocation(point, (rs)=>{
                var addComp = rs.addressComponents;
                var address = addComp.province + addComp.city + addComp.district + addComp.street + addComp.streetNumber;//获取地址
                
                //画图 ---》显示地址信息
                var label = new BMap.Label(address,{offset:new BMap.Size(20,-10)});
                this.map.removeOverlay(this.mk.getLabel());//删除之前的label
                this.address_detail = address;
                this.mk.setLabel(label);
                
            });
                
        },
        setPlace() {
            this.map.clearOverlays(); //清除地图上所有覆盖物
            var th = this
            function myFun() {
                th.userlocation = local.getResults().getPoi(0).point; //获取第一个智能搜索的结果
                th.map.centerAndZoom(th.userlocation, 18);
                th.getMarker(th.userlocation);
            }
        
            var local = new BMap.LocalSearch(this.map, {
                onSearchComplete: myFun //智能搜索
            });
            local.search(this.address_detail);
        },
        search () {
            var localSearch = new BMap.LocalSearch(this.map);
            localSearch.enableAutoViewport(); //允许自动调节窗体大小
            this.searchByInputName(localSearch);
        },
        searchByInputName(localSearch) {
            this.map.clearOverlays(); //清空原来的标注
            var th = this;
            var keyword = this.address_detail;
            localSearch.setSearchCompleteCallback(function(searchResult) {
                var poi = searchResult.getPoi(0);
                th.userlocation = poi.point;
                th.map.centerAndZoom(poi.point, 13);
                th.getMarker(th.userlocation);
            });
            localSearch.search(keyword);
        },
        onCopy () {
            this.$message('内容已复制到剪贴板!');
        },
        onError () {
            this.$message('内容复制失败,请重试!');
        }
    },
    mounted() {
        this.$nextTick(function() {
            this.drawMap();
        });
    }
};
</script>
<style scoped>
.box{
    height: 100%;
    background: #F3F3F3;
    padding: 2rem;
}
.allmap {
 width: 100%;
 height: 500px;
 font-family: "微软雅黑";
 border: 1px solid green;
}
.el-tag {
 cursor: pointer;
}
</style>